CA2218670A1 - Method and apparatus for feeding multiple digesters - Google Patents

Method and apparatus for feeding multiple digesters

Info

Publication number
CA2218670A1
CA2218670A1 CA002218670A CA2218670A CA2218670A1 CA 2218670 A1 CA2218670 A1 CA 2218670A1 CA 002218670 A CA002218670 A CA 002218670A CA 2218670 A CA2218670 A CA 2218670A CA 2218670 A1 CA2218670 A1 CA 2218670A1
Authority
CA
Canada
Prior art keywords
digesters
distinct
chips
high pressure
transfer device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002218670A
Other languages
French (fr)
Other versions
CA2218670C (en
Inventor
Bruno S. Marcoccia
C. Bertil Stromberg
J. Wayne Chamblee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Inc
Original Assignee
Ahlstrom Machinery Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ahlstrom Machinery Inc filed Critical Ahlstrom Machinery Inc
Publication of CA2218670A1 publication Critical patent/CA2218670A1/en
Application granted granted Critical
Publication of CA2218670C publication Critical patent/CA2218670C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00—Digesters
    • D21C7/06—Feeding devices

Landscapes

  • Paper (AREA)

Abstract

A number of distinct parallel digesters are fed with chips from a common steaming vessel. After steaming the chips are slurried and pressurized, and substantially simultaneously the steamed, slurried, and pressurized chips are transferred to at least some of (and typically each of) the distinct parallel digesters. A material stream is split into a number of individually controllable material streams (one for each of the digesters) either at the discharge from the steaming vessel, after slurrying (or at the discharge from a slurrying vessel), or after pressurizing (e.g. in a high pressure transfer device). For example a multi-branch conduit may be connected to the slurry outlet from the high pressure transfer device, the conduit having a branch directly connected to each of the digesters. A distinct return conduit may also be provided from each of the digesters to the high pressure transfer device, each return conduit preferably has a distinct flow control device and/or pump which are individually controlled.
CA002218670A 1996-11-04 1997-10-21 Method and apparatus for feeding multiple digesters Expired - Fee Related CA2218670C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/744,857 US5795438A (en) 1996-11-04 1996-11-04 Method and apparatus for feeding multiple digesters
US08/744,857 1996-11-04

Publications (2)

Publication Number Publication Date
CA2218670A1 true CA2218670A1 (en) 1998-05-04
CA2218670C CA2218670C (en) 2002-09-10

Family

ID=24994237

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002218670A Expired - Fee Related CA2218670C (en) 1996-11-04 1997-10-21 Method and apparatus for feeding multiple digesters

Country Status (5)

Country Link
US (1) US5795438A (en)
JP (1) JPH10158986A (en)
CA (1) CA2218670C (en)
FI (1) FI974081A (en)
SE (1) SE9703838L (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6174411B1 (en) * 1997-02-10 2001-01-16 Andritz-Ahlstrom Inc. Continuous digester with inverted top separator
US6120646A (en) * 1998-04-06 2000-09-19 Kvaerner Pulping Ab Feeding system of feeding a cellulose material
US6284095B1 (en) 1999-02-04 2001-09-04 Andritz-Ahlstrom Inc. Minimization of malodorous gas release from a cellulose pulp mill feed system
US6368453B1 (en) * 1999-03-18 2002-04-09 Andritz Inc. Chip feeding to a comminuted cellulosic fibrous material treatment vessel
US6468006B1 (en) 1999-05-11 2002-10-22 Andritz, Inc. High pressure feeder having restriction ramp in high pressure inlet
US20030215293A1 (en) * 1999-05-11 2003-11-20 Andritz Inc. High pressure feeder having smooth pocket in rotor
US6497791B1 (en) * 2001-08-30 2002-12-24 Jack T. Baker Apparatus for pre-treatment of wood chips
SE519555C2 (en) * 2002-05-21 2003-03-11 Kvaerner Pulping Tech Continuous sawdust cooking process for producing pulp, involves adding filtrate from washing step and white liquor to basing vessel to form part of cooking liquid
FI123037B (en) * 2004-05-05 2012-10-15 Metso Paper Inc Process and apparatus for degassing of fish
US7452444B2 (en) * 2004-05-26 2008-11-18 International Paper Company Digester wash extraction by individual screen flow control
FI118005B (en) * 2005-09-27 2007-05-31 Metso Paper Inc Feeder
US8651772B2 (en) * 2007-12-20 2014-02-18 General Electric Company Rotary apparatus for use with a gasifier system and methods of using the same
US8956505B2 (en) * 2009-06-11 2015-02-17 Andritz Technology And Asset Management Gmbh Compact feed system and method for comminuted cellulosic material
US8951388B2 (en) 2011-04-08 2015-02-10 Pec-Tech Engineering And Construction Pte Ltd Method and system for efficient production of dissolving pulp in a kraft mill producing paper grade pulp with a continuous type digester
US8986504B1 (en) 2013-10-25 2015-03-24 International Paper Company Digester apparatus
SE542821C2 (en) * 2018-09-05 2020-07-14 Valmet Oy A feeding arrangement for feeding comminuted cellulose material and a method for operating the feeding arrangement

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359543A (en) * 1940-09-24 1944-10-03 Kamyr Ab Apparatus for continuous digestion of fibrous material
US2459180A (en) * 1943-12-04 1949-01-18 Kamyr Ab Apparatus for charging fibrous material into a digester
FR1229425A (en) * 1958-07-09 1960-09-07 Kamyr Ab Process and installation for the continuous cooking of cellulose
NO115278B (en) * 1962-03-03 1968-09-09 Kamyr Ab
US3322616A (en) * 1963-07-12 1967-05-30 Honeywell Inc Pulp digester control apparatus
SE302882B (en) * 1963-12-06 1968-08-05 Sunds Ab
SE300755B (en) * 1964-04-16 1968-05-06 Kamyr Ab
US3427218A (en) * 1964-07-10 1969-02-11 Kamyr Ab Method of performing counter-current continuous cellulose digestion
SE330819B (en) * 1966-09-12 1970-11-30 Kamyr Ab
SE318181B (en) * 1967-05-16 1969-12-01 Kamyr Ab
SE305582B (en) * 1967-09-18 1968-10-28 Kamyr Ab
SE318179B (en) * 1967-09-21 1969-12-01 Kamyr Ab
SE359331B (en) * 1970-03-17 1973-08-27 Kamyr Ab
SE354302B (en) * 1972-03-21 1973-03-05 Kamyr Ab
US3843468A (en) * 1973-03-12 1974-10-22 Kamyr Inc Method and apparatus of a two zoned,liquid level controlled screening and feeding device for cellulose digestion
US4104113A (en) * 1976-06-21 1978-08-01 Kamyr, Inc. Two-stage digestion with between vessel heating
US4123318A (en) * 1976-06-29 1978-10-31 Kamyr, Inc. Three-vessel treatment system
US4432836A (en) * 1979-07-30 1984-02-21 Kamyr, Inc. Vessel false bottoming
SE452482B (en) * 1982-04-28 1987-11-30 Sunds Defibrator PROCEDURE FOR BATCH PREPARATION OF SULPHATE Pulp WITH HIGH DEGREE
US5300195A (en) * 1988-05-31 1994-04-05 Kamyr Ab Continuous vertical digester apparatus
US5236553A (en) * 1989-06-28 1993-08-17 Kamyr Ab Continuous cooking with reduced horsepower and pulp degradation
US5053108A (en) * 1989-06-28 1991-10-01 Kamyr Ab High sulfidity cook for paper pulp using black liquor sulfonization of steamed chips
US5500083A (en) * 1994-02-01 1996-03-19 Kamyr, Inc. Method of feeding cellulosic material to a digester using a chip bin with one dimensional convergence and side relief
US5476572A (en) * 1994-06-16 1995-12-19 Kamyr, Inc. Chip feeding for a continuous digester

Also Published As

Publication number Publication date
SE9703838D0 (en) 1997-10-21
US5795438A (en) 1998-08-18
FI974081A (en) 1998-05-05
JPH10158986A (en) 1998-06-16
CA2218670C (en) 2002-09-10
SE9703838L (en) 1998-05-05
FI974081A0 (en) 1997-10-29

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed